Rude cashier

In my entire shopping experience, i have never felt so much disrespected by a cashier. Today i was at picnpay at highveld mall when a cashier gave me a terrible service, while i was looking for my bank card and had all my things put on top of his desk, he deliberately moved the grocery desk and my cards were stuck inside, and while i tried to remove them, he was just rudely staring at me, i lashed out to him and said why are you doing this? He said im being aggressive and continued staring at me until i ordered him to finish with my purchase.